cli: added backend module templating factory

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>

packages/cli/templates/default-backend-module/.eslintrc.js

@@ -0,0 +1 @@
+module.exports = require('@backstage/cli/config/eslint-factory')(__dirname);

packages/cli/templates/default-backend-module/README.md.hbs

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+# {{name}}
+
+The {{moduleId}} backend module for the {{pluginId}} plugin.
+
+_This plugin was created through the Backstage CLI_

packages/cli/templates/default-backend-module/package.json.hbs

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+{
+  "name": "{{name}}",
+  "description": "The {{moduleId}} backend module for the {{pluginId}} plugin.",
+  "version": "{{packageVersion}}",
+  "main": "src/index.ts",
+  "types": "src/index.ts",
+  "license": "Apache-2.0",
+{{#if privatePackage}}
+  "private": {{privatePackage}},
+{{/if}}
+  "publishConfig": {
+{{#if npmRegistry}}
+    "registry": "{{npmRegistry}}",
+{{/if}}
+    "access": "public",
+    "main": "dist/index.cjs.js",
+    "types": "dist/index.d.ts"
+  },
+  "backstage": {
+    "role": "backend-plugin-module"
+  },
+  "scripts": {
+    "start": "backstage-cli package start",
+    "build": "backstage-cli package build",
+    "lint": "backstage-cli package lint",
+    "test": "backstage-cli package test",
+    "clean": "backstage-cli package clean",
+    "prepack": "backstage-cli package prepack",
+    "postpack": "backstage-cli package postpack"
+  },
+  "dependencies": {
+    "@backstage/backend-common": "{{versionQuery '@backstage/backend-common'}}",
+    "@backstage/backend-plugin-api": "{{versionQuery '@backstage/backend-plugin-api'}}"
+  },
+  "devDependencies": {
+    "@backstage/backend-test-utils": "{{versionQuery '@backstage/backend-test-utils'}}",
+    "@backstage/cli": "{{versionQuery '@backstage/cli'}}"
+  },
+  "files": [
+    "dist"
+  ]
+}

packages/cli/templates/default-backend-module/src/index.ts.hbs

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+/***/
+/**
+ * The {{moduleId}} backend module for the {{pluginId}} plugin.
+ *
+ * @packageDocumentation
+ */
+
+export { {{moduleVar}} } from './module';

packages/cli/templates/default-backend-module/src/module.ts.hbs

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+import { coreServices, createBackendModule } from '@backstage/backend-plugin-api';
+
+export const {{moduleVar}} = createBackendModule({
+  pluginId: '{{pluginId}}',
+  moduleId: '{{moduleId}}',
+  register(reg) {
+    reg.registerInit({
+      deps: { logger: coreServices.logger },
+      async init({ logger }) {
+        logger.info('Hello World!')
+      },
+    });
+  },
+});

packages/cli/templates/default-backend-module/tsconfig.json

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+{
+  "extends": "@backstage/cli/config/tsconfig.json",
+  "include": ["src"],
+  "exclude": ["node_modules"],
+  "compilerOptions": {
+    "outDir": "dist-types",
+    "rootDir": "."
+  }
+}